Service Information

Volt

DTC P06B1, P06B2, P06B4, P06B5, P06E7 or P06E8

Diagnostic Instructions

•	Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

•	Review Strategy Based Diagnosis for an overview of the diagnostic approach.

•	Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC P06B1: Sensor Supply Positive Voltage Circuit 1 Low Voltage

DTC P06B2: Sensor Supply Positive Voltage Circuit 1 High Voltage

DTC P06B4: Sensor Supply Positive Voltage Circuit 2 Low Voltage

DTC P06B5: Sensor Supply Positive Voltage Circuit 2 High Voltage

DTC P06E7: Sensor Supply Positive Voltage Circuit 3 Low Voltage

DTC P06E8: Sensor Supply Positive Voltage Circuit 3 High Voltage

Circuit/System Description

The motor control modules share an internal 15 V reference power supply in order to operate the drive motor sensors processors. This fault is handled inside the power inverter module, often referred to as the drive motor generator power inverter module, and no external circuits are involved. The control modules listed below are part of the power inverter module and are not serviced separately:

•	Auxiliary transmission fluid pump control module

•	Drive motor control module 1

•	Drive motor control module 2

•	Hybrid powertrain control module 1

Conditions for Running the DTC

•	The vehicle is ON.

•	The system voltage is 8-18 V.

Conditions for Setting the DTC

P06B1, P06B4, or P06E7

The reference voltage is less than 12 V for 1 second.

P06B2, P06B5, or P06E8

The reference voltage is greater than 18 V for 1 second.

Action Taken When the DTC Sets

•	DTCs P06B1, P06B2, P06B4, P06B5, P06E7, and P06E8 are Type A DTCs.

•	The power inverter module requests the hybrid powertrain control module 2 to open the high voltage contactor relays.

Conditions for Clearing the DTC

DTCs P06B1, P06B2, P06B4, P06B5, P06E7, and P06E8 are Type A DTCs.

Diagnostic Aids

This DTC may set due to low 12 V system voltage.

Reference Information

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Circuit/System Verification

If the DTC is set, program the T6 power inverter module. If the DTC resets, replace the T6 power inverter module.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for Drive Motor Generator Power Inverter Module, also called the power inverter module, replacement, programming and set-up.